Initial commit: DDNS service with NIC V2 protocol support

Features: - Token-based subdomain claiming - NIC V2 (DynDNS2) protocol implementation - Technitium DNS integration - Rate limiting (10 req/min IP, 1 req/min token) - Web UI for space claiming - Docker/Docker Compose support - Compatible with UniFi, pfSense, EdgeRouter Module: git.dws.rip/DWS/dyn
2026-02-01 16:37:09 -05:00
commit 2470f121e2
16 changed files with 1835 additions and 0 deletions
--- a/web/static/js/app.js
+++ b/web/static/js/app.js
@@ -0,0 +1,135 @@
+document.addEventListener('DOMContentLoaded', function() {
+    const claimForm = document.getElementById('claim-form');
+    const subdomainInput = document.getElementById('subdomain');
+    const availabilityStatus = document.getElementById('availability-status');
+    const claimBtn = document.getElementById('claim-btn');
+    const claimSection = document.getElementById('claim-section');
+    const successSection = document.getElementById('success-section');
+    const errorSection = document.getElementById('error-section');
+    const routerConfig = document.getElementById('router-config');
+
+    let checkTimeout = null;
+
+    subdomainInput.addEventListener('input', function() {
+        const value = this.value.toLowerCase().replace(/[^a-z0-9-]/g, '');
+        this.value = value;
+
+        clearTimeout(checkTimeout);
+        availabilityStatus.textContent = '';
+        availabilityStatus.className = 'status';
+        claimBtn.disabled = true;
+
+        if (value.length >= 3) {
+            checkTimeout = setTimeout(() => checkAvailability(value), 300);
+        }
+    });
+
+    async function checkAvailability(subdomain) {
+        try {
+            const response = await fetch(`/api/check?subdomain=${encodeURIComponent(subdomain)}`);
+            const data = await response.json();
+
+            if (data.available) {
+                availabilityStatus.textContent = '✓ Available';
+                availabilityStatus.className = 'status available';
+                claimBtn.disabled = false;
+            } else {
+                availabilityStatus.textContent = '✗ Already taken';
+                availabilityStatus.className = 'status taken';
+                claimBtn.disabled = true;
+            }
+        } catch (error) {
+            console.error('Error checking availability:', error);
+        }
+    }
+
+    claimForm.addEventListener('submit', async function(e) {
+        e.preventDefault();
+        const subdomain = subdomainInput.value;
+
+        claimBtn.disabled = true;
+        claimBtn.textContent = 'Claiming...';
+
+        try {
+            const response = await fetch('/api/claim', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify({ subdomain: subdomain }),
+            });
+
+            const data = await response.json();
+
+            if (response.ok) {
+                showSuccess(data);
+            } else {
+                showError(data.error || 'Failed to claim space');
+            }
+        } catch (error) {
+            showError('Network error. Please try again.');
+        }
+
+        claimBtn.disabled = false;
+        claimBtn.textContent = 'Claim Space';
+    });
+
+    function showSuccess(data) {
+        claimSection.classList.add('hidden');
+        successSection.classList.remove('hidden');
+        routerConfig.classList.remove('hidden');
+
+        document.getElementById('token-value').textContent = data.token;
+        document.getElementById('fqdn-value').textContent = data.fqdn;
+
+        const updateUrl = `https://dyn.${data.fqdn.split('.').slice(-2).join('.')}/api/nic/update?hostname=%h&myip=%i`;
+        document.getElementById('update-url').textContent = updateUrl;
+
+        document.querySelectorAll('.hostname-placeholder').forEach(el => {
+            el.textContent = data.fqdn;
+        });
+
+        document.querySelectorAll('.update-url-placeholder').forEach(el => {
+            el.textContent = updateUrl;
+        });
+
+        const curlCmd = `curl -u "none:${data.token}" "https://dyn.${data.fqdn.split('.').slice(-2).join('.')}/api/nic/update?hostname=${data.fqdn}"`;
+        document.getElementById('curl-example').textContent = curlCmd;
+
+        document.getElementById('copy-token').addEventListener('click', function() {
+            copyToClipboard(data.token);
+            this.textContent = 'Copied!';
+            setTimeout(() => this.textContent = 'Copy Token', 2000);
+        });
+
+        document.getElementById('copy-curl').addEventListener('click', function() {
+            copyToClipboard(curlCmd);
+            this.textContent = 'Copied!';
+            setTimeout(() => this.textContent = 'Copy', 2000);
+        });
+    }
+
+    function showError(message) {
+        claimSection.classList.add('hidden');
+        errorSection.classList.remove('hidden');
+        document.getElementById('error-message').textContent = message;
+    }
+
+    document.getElementById('try-again').addEventListener('click', function() {
+        errorSection.classList.add('hidden');
+        claimSection.classList.remove('hidden');
+        subdomainInput.value = '';
+        subdomainInput.focus();
+    });
+
+    function copyToClipboard(text) {
+        navigator.clipboard.writeText(text).catch(function() {
+            const textarea = document.createElement('textarea');
+            textarea.value = text;
+            document.body.appendChild(textarea);
+            textarea.select();
+            document.execCommand('copy');
+            document.body.removeChild(textarea);
+        });
+    }
+});